// Hàm tạo 1 khối mới
        private void addShape(int shapeNumber, int _left = 0, int _down = 0)
        {
            removeShape();
            currentTetrominoRow    = new List <int>();
            currentTetrominoColumn = new List <int>();
            Rectangle square = null;

            if (!isRotated)
            {
                currentTetromino = null;
                currentTetromino = tetramino.getVariableByString(tetramino.getArrayTetrominos()[shapeNumber].ToString());
            }
            int firstDim  = currentTetromino.GetLength(0);
            int secondDim = currentTetromino.GetLength(1);

            currentTetrominoWidth  = secondDim;
            currentTetrominoHeigth = firstDim;
            if (currentTetromino == tetramino.I_Tetromino_90)
            {
                currentTetrominoWidth = 1;
            }
            else if (currentTetromino == tetramino.I_Tetromino_0)
            {
                currentTetrominoHeigth = 1;
            }
            for (int row = 0; row < firstDim; row++)
            {
                for (int column = 0; column < secondDim; column++)
                {
                    int bit = currentTetromino[row, column];
                    if (bit == 1)
                    {
                        square = tetramino.getBasicSquare(handleColor(board.getColor(), shapeNumber));
                        board.getMainGrid().Children.Add(square);
                        square.Name = "moving_" + Grid.GetRow(square) + "_" + Grid.GetColumn(square);
                        if (_down >= board.getMainGrid().RowDefinitions.Count - currentTetrominoHeigth)
                        {
                            _down = board.getMainGrid().RowDefinitions.Count - currentTetrominoHeigth;
                        }
                        Grid.SetRow(square, rowCount + _down);
                        Grid.SetColumn(square, columnCount + _left);
                        currentTetrominoRow.Add(rowCount + _down);
                        currentTetrominoColumn.Add(columnCount + _left);
                    }
                    columnCount++;
                }
                columnCount = 0;
                rowCount++;
            }
            columnCount = 0;
            rowCount    = 0;
            if (!nextShapeDrawed)
            {
                drawNextShape(nextShapeNumber);
            }
        }